Chair for mine-cages.



No. 699,!35. Patented May 6 I902.

" J. 0. BABDILL.

CHAIR FOB MINE CAGES.

(Application 16196. Kaye 1901.) (Nu Modgl.) V 4 Sheets-Sheet I.

' 15: minus mans ca, momumn WASNINGTU". a. c.

No.-699,l35. .Phfented may 6, I902."

- J. 0.. BARDILL.

CHAIR FOR MINE GAGES.

(Appliqnion filed May 4, 1901.

(No Model.) A 4 Sheets-Sheet 2.

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No. 699,|35. V Patentbd'May 6, I902".

J. o. BARDILL,

CHAIR FOR mm: GAGES.

(Application filed May 4, 1901.)

(No Model.) I 4 Sheets-$haet 3;

YR: min Pmm: m menu-ma, unaware, c. e

(No Model.)

' Patented May 6, I902. J. 0. BABDILL.

CHAIR FUR IMNE CAGES. (Apmmon filed m 4, 1901.

4 Sheets-Sheet 4.

UNITED STATES- PATIENT OFFIC JCIHN O. BARDILL, OF ST. LOUIS, MISSOURI.

CHAIR FOR MINE-CAGES.

SPECIFICATION formingpart of Letters Patent No. 699,135, dated May 6, 1902.

Application filed May 4, 1901.

T0 ctZZ whom it may concern.-

Be it known that 1, JOHN 0. BARDILL, a citizen of the United States, residingin the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Chairs for Mine-Cages, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to that class of appalooking in the direction indicated by the arrows in Fig. I. Fig. IV is a top or plan view. Fig. V is an enlarged perspective view of one of the segments and links by which the chairdogs are actuated. Fig.VI is an enlarged detail perspective viewlookingat the-under side of one of the chair-dogs. Fig. VII is a View, partlyin elevation and partlyin section, of cylinders used where the chairs are operated by oil or other heavy fluids as a pressure medium. Fig. VIII is a view, partly in elevation and partly in vertical section, of means for causing the uniform travel of the chairdogs. Fig. IX is a horizontal sectional view taken on the line IX IX, Fig. VIII.

A' designates track-rails that lead to the mine-shaft in which my apparatus is posi'-' ti'oned.

B is the mine-cage, and C designates the car-rails on said cage. Located in the shaft immediately beneath the track-rails is a rim 1,-that is preferably of channel shape-in cross-section; as shown in Figs. Iand II.v Fixed to the'rim 1 is a pair 1 of brackets" 2,looated opposite each other in the mine-shaft.

3. designates guide-bars connected to the brackets 2 at their upper ends and attached at their lower ends to brackets 4, that are sup- Serial No. 58,763. (No model.)

. ported bya rim 5, located in the lineshaft at a suitable distance beneath the rim 1.

6 designates pressuremediumreceiving cylinders mounted beneath and supported by the brackets 4 and to the lower ends of which are connected the branches 7 of a pipe 8, through which pressure medium, such as air or steam, is conveyed to the receiving-cylinder 6. The pressure-medium pipe 8 is provided with a two-way valve 9, that is designed tobemanipulated by the operator to admit the pressure medium into the cylinders 6 at the desired time, the valve being located at a point convenient for the access of the operator either exterior or interior of the mineshaft. In the pressure-receiving cylinders 6 are pistons 10, (see Figs. I and II,) that have connected to them the upwardly-extending piston-rods 11, which pass through the brackets 4.

12 designates housings to which the upper ends of the piston-rods 11 are jointed. The housings 12 have side walls 12 and are arranged to move vertically between the guidebars 3, and mounted in said housings at the upper and lower ends thereof are stub-shafts that carry guide rollers 14, which travel against theedges of ;the guide-bars and are confined by side plates 15,' mounted on the outer ends of the roller-carrying shafts.

16 designates rack-bars arranged in guides 17, carried by thehousings 12 and adapted to move vertically in said guides. .The lower ends of the rack-bars 16 are connected to vertical rods 18, thatpass loosely through the brackets 4. Slidably mounted on the vertical rods 18 are weights 19, that are notched at 20, (see Fig. 111,) so that the nuts 18 on the lower ends of the'vertical rods are perthey are bro'ughttorest, as will hereinafter appear. I

21 designates yokes suspende'd'from-the brackets 4 and within which the weights '19 are adapted to move.

designates edfie m' nts, .theteeth The segments 1 -25 designates links, each pivotally connect mitted toplay.within the weights 19 when 23 of which are arrangedinenga'gement with .'the teeth of the rack-bars 16.

ed at one end to the segments 22, while the opposite ends of the links are pivoted to a pair of carrier-bars or carriers 26, that are joined at their outer ends bya shaft 27, journaled in the housing side walls 12.

28 designates dogs mounted on the carrierbars 26. Each of said dogs is provided with downwardly-extending flanges 29, that occupy positions against the outer faces of the carrier-bars and serve as guides and retainers for the dogs. The dogs are also provided at their under sides with cars 30, containing slots 31, that receive the shafts 27. By this arrangement the dogs 28 are slidingly mounted on the carrier-bars 26, so as to be capable of longitudinal movement thereon.

In the practical use of the apparatus as thus far described the operation is as follows: The mine-cage is elevated to a point above the location of the dogs 28 when said dogs and the housings 12 are in their lowered positions, as seen in Fig. II. It is not necessary that the height to which the cage is elevated to be received by the dogs be one of any precision, but only that the elevation be sufiicient to bring it to a point above the location of the dogs when they are first carried to ahorizontal position. The pressure mediumfor instance, compressed airbeing introduced through the pipes 7 into the receiving-cylinders 6 acts against the pistons 10 and by carrying the pistons upwardly starts the vertical movement of the housings 12. At this time the weights 19 pull upon the vertical rods 18, as seen in Fig. II, and hold the rack-bars 16 from movement. As the housings 12 continue to travel upwardly the segments 22, being in mesh with the rack-bars 16, are rocked, thereby throwing their inner ends in an upward direction and moving the links therewith to raise the inner ends of the carrier-bars 26, which swing on the shafts 27, on which they are mounted. The result is that the dogs 28 are moved from the inclined position (seen in Fig. II) to the horizontal position (seen in Fig. I) as the parts move into the position seen in Fig. I. As the parts move into the positions stated the pivots connecting the segments 22 and links 25 pass the central lines between the axis of the shafts 24 of the segments 22 and the pivots connecting the links 25 and carrier-bars 26 reach a dead-center, so that the carrier-bars are locked from downward movement, in which position they are retained through the agency of the weights 19, that effect a downward pull on the vertical rods 18, and consequently hold the rack-bars 1-6 and segments 22 from movement. The dogs 28 having been moved into horizontal position, the ascent of the housings 12 continues and the dogs are carried upwardly be neat-h the cage, thereby elevating it from the position indicated by the lowermost dotted lines, Fig. I, to the position indicated by the uppermost dotted lines, placing the cage B at the exact position required to bring its rails G into alinement with the trackrails A, onto which the car is to be transferred or from which the car is to be delivered. When the cage is to be lowered, the pressure medium is shut oil from delivery into the cylinders 6, and the pressure medium admitted to the cylinders is permitted. to escape therefrom through the two-way valve 9, so that the pistons 10 will descend and permit the housings 12 to move downwardly. As the housings are lowered the weights 19 travel downwardly Within the yokes 21 until they reach the lower ends of said yokes and rest thereon, thereby relieving the vertical rods 18 and removing the pull of said weights on the rack-bars 16. The lower ends of the vertical rods 18 then move downwardly through the weights 19 and by coming in contact with the yokes 21 are stopped from further movement, thereby bringing the rack-bars 16 to rest. The housings 12 at this time have not completed their descent, and as a consequence the stoppage of the rack-bars causes the segments 22 to be rocked, thereby moving the inner ends of said segments, throwing the links 25 downwardly into the position seen in Fig. 11, carrying therewith the carrier-bars, 26 and lowering the dogs 28 out of the path of travel of the mine-cage, which may then be lowered in the shaft.

The construction of apparatus is simple and not liable to become impaired; but for the purpose of providing for the projection of the dogs 28 from the support of the cage in the event of any of the parts becoming out of order or the pressure-medium-supply apparatus becoming impaired I introduce means whereby the dogs maybe projected manually. As has been described the dogs 28 are slidingly mounted on the carrier-bars 26, and consequently are capable of longitudinal. movement on said carrier-bars, said movement being permitted by the slots 31 in the ears of the dogs. It will therefore be seen that when the carrier-bars 26 are in their elevated positions (seen in Figs. I and III) and the housings 12 are elevated the dogs 28 may be slid into the mine-shaft after the mine-cage is elevated and that in such position they will support the cage. Pivotally connected to each dog 28 is a link 32. Each of said links 32 is adapted to receive detachable connection with crank-arms 33. (See Figs. I and II.) One of said crank-arms is carried bya rock-shaft 34, and the other is carried by a rock-shaft 35. On the rock-shaft 35 is a handlever 36, by which the shaft 35 is rocked to impart movement to the dog 28 adjacent thereto, and the rock-shaft 34 is rocked by a connecting-rod 37, that leads to the crankarm carried by the rock-shaft 34.

38 designates a hanger-yoke embracing the housing 12, the upper ends of two arms of which yoke are bent outwardly and downwardly to produce hooks 39. (See Fig. III.)

40 designates a rotative rod provided with a hand-wheel 4:1, centrally fixed thereto and having its ends provided with right and left ICO ' togetherincommonby thepinions and 51 andrshaft 52 said shafts 48are caused to ro-- hand screw-threads and seated in threaded apertures in the arms of the yoke 38.

When the dogs 28 are to be moved manually, the housings 12 are raised to their most elevated position and are held thereat by the yoke 38, the arms of which are thrown outwardly at their upper ends by manipulation of the hand-wheel 41 to rotate the rod 40, and the right and left hand threads thereon by turning in the yoke-arms cause the arms to be moved outwardly, so that the hooks 39 of the yokes will engage the upper ends of the guide-bars 3 and sustain the housings 12 from descent. The links 32 being then connected to the crank-arms 33, the cage-supporting dogs 28 maybe readily slid inwardly and outwardly atthe. will of the operator to support or release the. mine-cage.

In Fig. VII, Ihaveillustrated cylinder ap-,

paratus capable of use in employment of oil or other heavy fluids as a pressure medium for raising the housings 12. In this construction 6? designates the pressure-receiving cylinders, containing pistons that carry pistonrods 11. The fluid pressure medium is conveyed to the cylinders'6 through pipes 7 from a pair of fluid-cylinders 42, containing pistons 43, that are operated in unison from a pair of cylinders 44. The oil or other heavy fluid in the two fluid-cylinders 42 is forced therefrom in unison, thereby providing and maintaining uniform pressure ,in the cylinders 6; 1

In Figs. VIII and IX, I have illustrated a construction whereby thehousings 12 and dogs carried therebyare caused to move uniformly,so that in the existence of an unevenlybalanced load on the minescage the cage will be prevented from canting by reason of one,

of the cage-carrying dogs moving faster than theiother. In the arrangement shown in said figures the piston-rods ll extend through the lower ends of the pressure-receiving cylinders 6 and carry at theirv lower ends racks45, that operate through brackets 46; secured to the walls of the mine-shaft. :48 represents shafts journaled in thebracket-s 46 and brackets 47, andon each of said shafts is a spur-wheel 49, arranged in; mesh with the racks 45. shaft 48'carries a bevel-pinion 50, that has engaged therewith a beveled pinion 51. The bevel-pinions 5l-are mounted on.- a shaft 52, positioned at right angles to the shafts 48 and journaled in boxes 53, secured to the wall of thezmine-shaf t.

Bythe use of the construction just described it will be seenthat the shafts 48 being geared tate in uniformity and that thereforethe spurwheels 49 must consequently move in unison, which-causes the racks 45 and piston-rods 11 to partake of the sameuniform travel. The result is that the pairs of housings 12 and dogs 28 are caused to travel ina uniform manner.

Each

I claim as my invention? 1. In an. apparatus of the classdescribed,

the combination of dog-carrying means, dogs swingingly connected to said means, means whereby pressure medium is applied to elevate said dog-carrying means, 'and means whereby said .dogs are moved from downwardly-inclined positionsto horizontal positions, substantiallyas described.

whereby pressure medium is applied to elevate said dog-carrying means, and means inglymounted .on said carriers, substantially as described.

4. In an apparatus ofv the class described, the combination of a pair of vertically-mow. able housings, a pairof dogs pivoted tosaid housings,- meanswhereby said housings are I elevated, and means whereby said dogs are swung'on their pivots, substantially as (16*. scribed,

2. In an apparatus of theclass described,v the combination of dog-carrying means, dogs swingingly connected to said means, means 5. In an apparatus of the class described,

the combination of a pair ofhousings, a pair of dogs pivotally connected to said housings,

means whereby pressure medium is applied to elevate said housings, and independent means whereby saiddogs are .rocked on their pivots to raise andlower them, substantially as described.

6. In an apparatus of the class described,

the combination ofa pair of housings, a pair of carriers pivoted to said housings, dogs. mounted on said carriers, a pair of segments carried bysaid housings and having link connection with said dog-carriers, and vmeans whereby said segments are rocked-to raise and lower said dog-carriers, substantially as .described.

7. In an apparatus of the class described,

IIO

the combination of a pair of -verticallyemov- .able housings,- means for movingflsaid hous ings vertically, guide-barsarranged. to direct the travel of said housings, dogscarried by. said housings, and means for raising andlowering said dogs, substantially asdescribed.

8. 1m an apparatus of the class described, I

the combination of a pair of housings, means for raising and lowering said housings, a pair of carrierswpivoted tosaid. housings, dogs-- mounted onv said .carriers, segments mounted in said housings andprovided with link con+ bars, substantiallyas described 9. In an apparatus ofthe classdescribed,

=nectionto said dog-carriers;rack-bars ar. ranged in engagement with-said segments,

- andmeans for yieldingly holding saidxracke ,1'30

the combination of a pair of vertically-movable housings, means-for elevating said housings, a pair of dogs, carriers connected to said housings and on which said dogs are mounted, segments rockingly mounted in said housings and having link connection with said dogcarriers, rack-bars arranged in engagement with said segments, vertically-movable rods to which said rack-bars are connected,weights slidingly mounted on said rods, and yokes in which said weights are arranged to travel, substantially as described.

10. In an apparatus of the class described, the combination of dog-supporting means, dogs slidingly supported by said means, and a vertically-movable suspended yoke whereby said dog-supporting means may be suspended, substantially as described.

ll. In an apparatus of the class described, the combination of dog-supporting means, dogs slidingly supported by said supporting means, a yoke having hooks atits upper ends and whereby said dog-supporting means may be suspended, and means for moving said hooked ends of the yoke outwardly, substan tially as and for the purpose set forth.

12. In an apparatus of the class described, the combination of dog-supporting means, dogs slidingly supported by said supporting means, a yoke whereby said dog-supporting means may be suspended, and a rotatable rod having right and left hand screw-threaded ends arranged in the arms of said yoke whereby said arms may be moved outwardly, substantially as and for the purpose set forth.

13. In an apparatus of the class described, the combination of independent dog-supporting means, dogs carried thereby, means for raising and lowering said dog-carrying means, and means whereby said dog-carrying means are caused to travel vertically in unison with each other, substantially as de- JOHN O. BARDILL.

In presence of E. S. KNIGHT, M. P. SMITH. 

